# base
:::tip
In production environment, CDN path can be configured via `base`
publicPath root path reference webpack, business mode defaults to `auto`
For html part, publicPath defaults to undefined, can be set to full domain or subdirectory, or configured separately in html Public
:::

+ Type: `boolean | string | 'auto'`
+ Default: `'auto'`

```ts title="emp-config.js"
import {defineConfig} from '@empjs/cli'
export default defineConfig(store => {
  return {
    base:'/'
  }
})
```

## Production and Development Environment Examples
```ts title="emp-config.js"
import {defineConfig} from '@empjs/cli'
export default defineConfig(store => {
  return {
    base:store.isDev?'https://dev.xxx.com/':'https://www.xxx.com/'
  }
})
```